Steps to reproduce:

1. Have UIA enabled in NVDA's Advanced settings
2. Open a blank document in Microsoft Word
3. Type "1. " (one, dot, space), then type something.
4. Press ENTER.
5. Press NVDA+up arrow / NVDA+l to read the current line
6. Type something
7. Press NVDA+up arrow / NVDA+l to read the current line

Actual behavior:

At step 4, the focus moves to a new line, Word automatically adds "2. ". NVDA does not report anything.
At Step 5, NVDA reports "blank".
At step 7, NVDA report "2. text" (where text is whatever you typed).

With UIA disabled:
At step 4, NVDA reads "two dot"
At step 5, NVDA reports "two blank".
At step 7, NVDA reports "2. text" (the same as with UIA enabled).

Expected behavior:

NVDA should read the numbering the same as it does with UIA disabled.

System configuration

NVDA installed/portable/running from source:

NVDA version:

2021.3.3 Installed

Windows version:

Windows 10 (64-bit) Version: 21H2 (2009), Build: 19044.1586

Name and version of other software in use when reproducing the issue:

Office 365 (64-bit) Version: 16.0.14931.20118

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes

Have you tried any other versions of NVDA? If so, please report their behaviors.

No

If NVDA add-ons are disabled, is your problem still occurring?

Yes

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

Yes